Dental dam.



Nn. 629,324. Patented my' 25, |399. l

C. C. ALLEN.V

DDDDDDDD M.

'nfued maris 1599 bizz/wm ratus or articles of manufacture, such as rub- UNITED- STATES PATENT-(`)rF1CE..`

CHARLES C, ALLEN, OF KANSAS GITY,MISS OURI.

` y DENTAL DAM.

. SPECIFICATION forming part of Letters Patent NO. 629,324, dated uly 25, 1899.

Application filed March 6, 1899.A Serial No. 707,982. (No model.)

To all 1,011,011@ it may concern/.-

Be it known that I, CHARLES C. ALLEN, a citizen of the United States, residing at Kansas City, Missouri, have invented certain new and useful Improvements in Dental Dams, of which theffollowing is a specification.

My invention relates to that class of appaber and the like, which are used by dentists for the purpose ,of damming up the mouth of a patient during the process of dental surgery; and its principal object is to provide a simple, economical, andefcient dental dam, formed of rubber or similar material, with a light-reiiecting surface. j

In the accompanying drawings, Figure lis a plan view of a dental dam constructed in accordance with myimprovements and partly in section, and Fig-2 a transverse sectional view taken on the line 2 of' Fig. l.

- In the art to which this invention relates it is Well known that in using rubber dams the dental surgeon Whenever it is desirable to inspect the mouth of the .patient must use a mirror, which takes up valuable space and prevents him from operating etti ciently at the same time. This invention, therefore, is intended primarily to remove the'above objection and provide a dental dam iiexible and elastic in its nature, with one light-relecting surface,

In constructing a as will more fullyhereinatter appear.

dam in accordance with or similar material A with a coating of aluminium-bronze or similar material B, which does not in any Way impair the efficiency of the rubber or act as a deteriorating agent. This coating ot the sheet enables the dentist to use the dam and take advantage of its ilexibility and elasticity, and at the same time furnishes the mouth of the patient with the maximum amount of light reflected and deliected by the light-reflecting silvery surface.

Although I prefer to use alu minium-bronze, l

it will be understood that other substances for coating may be used, which Will accomplish to a more the invention, and of course the coated dam may be used eitherwith or Without a mirror, as desired.

I claiml. As a new article of manufacture, a dental dam formed of flexible, elastic material having a light-reecting substance on one side, substantially as described.

2. As a new articleoi' manufacture, a dental dam formed of rubber or similar `elastic yielding substance having one side provided with a coating of aluminium-bronze, substantially as described.

CHARLES C. ALLEN.

Witnesses:

EDGAR P. ALLEN, DENTON DUNN.

- my improvement-s I provide a sheet of rubber or less extent the objects of 

